Really depends on the game. I usually get a lot faster and more precise adjustments using KBM, so I prefer that for games like shooters and anything where precise 3d movement or fast reactions is an issue.
Basically the only games I play with controller are the ones that are really well optimised for controller and kind of meh for KBM and the ones on my Switch.
Speaking as GenZ (or Millennial, depends who you ask for the definition): fuuuuck that.
Speaking to the article specifically: I don't trust a surveillance vendor to work honestly when surveying the acceptance of their surveillance tool. The article also fails to mention (if it does, it's so brief I missed it) that the pressure some parents put on their kids to install and allow these kinds of spyware is immense. The kid having it on does not equate to the kid choosing to have it on.